package rpc_parallel

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Parameters
Signature

rpc_parallel
- Rpc_parallel
  - Executable_location
  - Map_reduce
    
    Config
    
    Make_map_function
    
    Input
    
    Output
    
    Param
    
    S
    
    Input
    
    Output
    
    Worker
    
    Make_map_function_with_init
    
    Input
    
    Output
    
    Param
    
    S
    
    Input
    
    Output
    
    Param
    
    Worker
    
    Make_map_reduce_function
    
    Accum
    
    Input
    
    Param
    
    S
    
    Accum
    
    Input
    
    Worker
    
    Make_map_reduce_function_with_init
    
    Accum
    
    Input
    
    Param
    
    S
    
    Accum
    
    Input
    
    Param
    
    Worker
    
    Map_function
    
    Input
    
    Output
    
    Param
    
    Worker
    
    Map_function_spec
    
    Input
    
    Output
    
    Map_function_with_init_spec
    
    Input
    
    Output
    
    Param
    
    Map_reduce_function
    
    Accum
    
    Input
    
    Param
    
    Worker
    
    Map_reduce_function_spec
    
    Accum
    
    Input
    
    Map_reduce_function_with_init_spec
    
    Accum
    
    Input
    
    Param
    
    Worker
  - Parallel
    
    Creator
    
    Expert
    
    Worker_env
    
    Function
    
    Direct_pipe
    
    Functions
    
    Make
    
    Connection
    
    Deprecated
    
    Id
    
    Hash_queue
    
    Hash_set
    
    Provide_bin_io
    
    X
    
    Provide_of_sexp
    
    X
    
    Map
    
    Key
    
    Provide_bin_io
    
    Key
    
    Provide_hash
    
    Provide_of_sexp
    
    Key
    
    Tree
    
    Provide_of_sexp
    
    K
    
    Set
    
    Elt
    
    Named
    
    Provide_bin_io
    
    Elt
    
    Provide_hash
    
    Provide_of_sexp
    
    Elt
    
    Tree
    
    Named
    
    Provide_of_sexp
    
    Elt
    
    Table
    
    Provide_bin_io
    
    Key
    
    Provide_of_sexp
    
    Key
    
    S
    
    Connection_state
    
    Functions
    
    C
    
    Worker_state
    
    Shutdown_on
    
    M
    
    Spawn_in_foreground_exn_result
    
    Spawn_in_foreground_result
    
    State
    
    Worker
    
    Connection
    
    Deprecated
    
    Id
    
    Hash_queue
    
    Hash_set
    
    Provide_bin_io
    
    X
    
    Provide_of_sexp
    
    X
    
    Map
    
    Key
    
    Provide_bin_io
    
    Key
    
    Provide_hash
    
    Provide_of_sexp
    
    Key
    
    Tree
    
    Provide_of_sexp
    
    K
    
    Set
    
    Elt
    
    Named
    
    Provide_bin_io
    
    Elt
    
    Provide_hash
    
    Provide_of_sexp
    
    Elt
    
    Tree
    
    Named
    
    Provide_of_sexp
    
    Elt
    
    Table
    
    Provide_bin_io
    
    Key
    
    Provide_of_sexp
    
    Key
    
    Shutdown_on
    
    M
    
    Spawn_in_foreground_exn_result
    
    Spawn_in_foreground_result
    
    Worker_spec
    
    Connection_state
    
    Functions
    
    C
    
    Worker_state
  - Parallel_managed
    
    Make
    
    Id
    
    Hash_queue
    
    Hash_set
    
    Provide_bin_io
    
    X
    
    Provide_of_sexp
    
    X
    
    Map
    
    Key
    
    Provide_bin_io
    
    Key
    
    Provide_hash
    
    Provide_of_sexp
    
    Key
    
    Tree
    
    Provide_of_sexp
    
    K
    
    Set
    
    Elt
    
    Named
    
    Provide_bin_io
    
    Elt
    
    Provide_hash
    
    Provide_of_sexp
    
    Elt
    
    Tree
    
    Named
    
    Provide_of_sexp
    
    Elt
    
    Table
    
    Provide_bin_io
    
    Key
    
    Provide_of_sexp
    
    Key
    
    S
    
    Connection_state
    
    Functions
    
    C
    
    Worker_state
    
    Worker
    
    Id
    
    Hash_queue
    
    Hash_set
    
    Provide_bin_io
    
    X
    
    Provide_of_sexp
    
    X
    
    Map
    
    Key
    
    Provide_bin_io
    
    Key
    
    Provide_hash
    
    Provide_of_sexp
    
    Key
    
    Tree
    
    Provide_of_sexp
    
    K
    
    Set
    
    Elt
    
    Named
    
    Provide_bin_io
    
    Elt
    
    Provide_hash
    
    Provide_of_sexp
    
    Elt
    
    Tree
    
    Named
    
    Provide_of_sexp
    
    Elt
    
    Table
    
    Provide_bin_io
    
    Key
    
    Provide_of_sexp
    
    Key
  - Remote_executable
  - Std

Legend:
Library
Module
Module type
Parameter
Class
Class type

module Worker = Make(T)

The Worker module has specialized functions to spawn workers and run functions on workers.

Parameters

module S : Worker_spec

Signature

type t

A Worker.t type is defined with bin_io so it is possible to create functions that take a worker as an argument.

val bin_t : t Core.Bin_prot.Type_class.t

val bin_read_t : t Core.Bin_prot.Read.reader

val __bin_read_t__ : (int -> t) Core.Bin_prot.Read.reader

val bin_reader_t : t Core.Bin_prot.Type_class.reader

val bin_size_t : t Core.Bin_prot.Size.sizer

val bin_write_t : t Core.Bin_prot.Write.writer

val bin_writer_t : t Core.Bin_prot.Type_class.writer

val bin_shape_t : Core.Bin_prot.Shape.t

val sexp_of_t : t -> Ppx_sexp_conv_lib.Sexp.t

type worker = t

A type alias to make the Connection signature more readable

val functions : t S.functions

Accessor for the functions implemented by this worker type

module Id : Core.Identifiable

val id : t -> Id.t

val serve : 
  ?max_message_size:int ->
  ?handshake_timeout:Core.Time.Span.t ->
  ?heartbeat_config:Async.Rpc.Connection.Heartbeat_config.t ->
  S.Worker_state.init_arg ->
  worker Async.Deferred.t

serve arg will start an Rpc server in process implementing all the functions of the given worker.

module Connection : sig ... end

module Shutdown_on (M : Core.T1) : sig ... end

type 'a with_spawn_args =
  ?where:Executable_location.t ->
  ?name:string ->
  ?env:(string * string) list ->
  ?connection_timeout:Core.Time.Span.t ->
  ?cd:string ->
  on_failure:(Core.Error.t -> unit) ->
  'a

The various spawn functions create a new worker process that implements the functions specified in the Worker_spec.

name will be attached to certain error messages and is useful for debugging.

env extends the environment of the spawned worker process.

connection_timeout is used for various internal timeouts. This may need be to increased if the init arg is really large (serialization and deserialization takes more than connection_timeout).

cd changes the current working directory of a spawned worker process.

shutdown_on specifies when a worker should shut itself down.

on_failure exn will be called in the spawning process upon the worker process raising a background exception. All exceptions raised before functions return will be returned to the caller. on_failure will be called in Monitor.current () at the time of this spawn call. The worker initiates shutdown upon sending the exception to the master process.

worker_state_init_arg (below) will be passed to init_worker_state of the given Worker_spec module. This initializes a persistent worker state for all connections to this worker.

val spawn : 
  (?umask:int ->
    shutdown_on:'a Shutdown_on(Core.Or_error).t ->
    redirect_stdout:
      [ `Dev_null | `File_append of string | `File_truncate of string ] ->
    redirect_stderr:
      [ `Dev_null | `File_append of string | `File_truncate of string ] ->
    S.Worker_state.init_arg ->
    'a)
    with_spawn_args

The spawned worker process daemonizes. Any initialization errors that wrote to stderr (Rpc_parallel internal initialization, not user initialization code) will be captured and rewritten to the spawning process's stderr with the prefix "WORKER %NAME% STDERR".

redirect_stdout and redirect_stderr specify stdout and stderr of the worker process.

val spawn_exn : 
  (?umask:int ->
    shutdown_on:'a Shutdown_on(Core.Monad.Ident).t ->
    redirect_stdout:
      [ `Dev_null | `File_append of string | `File_truncate of string ] ->
    redirect_stderr:
      [ `Dev_null | `File_append of string | `File_truncate of string ] ->
    S.Worker_state.init_arg ->
    'a)
    with_spawn_args

module Spawn_in_foreground_result : sig ... end

val spawn_in_foreground : 
  (shutdown_on:'a Shutdown_on(Spawn_in_foreground_result).t ->
    S.Worker_state.init_arg ->
    'a)
    with_spawn_args

Similar to spawn but the worker process does not daemonize. If the process was spawned on a remote host, the ssh Process.t is returned.

module Spawn_in_foreground_exn_result : sig ... end

val spawn_in_foreground_exn : 
  (shutdown_on:'a Shutdown_on(Spawn_in_foreground_exn_result).t ->
    S.Worker_state.init_arg ->
    'a)
    with_spawn_args

val shutdown : t -> unit Core.Or_error.t Async.Deferred.t

shutdown attempts to connect to a worker. Upon success, Shutdown.shutdown 0 is run in the worker. If you want strong guarantees that a worker did shutdown, consider using spawn_in_foreground and inspecting the Process.t.

module Deprecated : sig ... end